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            var object = {
              a: [{ b: 2 }, { d: 4 }],
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            var other = {
              a: [{ c: 3 }, { e: 5 }],
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      console.log(_.merge(object, other));
            // => { 'a': [{ 'b': 2, 'c': 3 }, { 'd': 4, 'e': 5 }] }
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